Adjustable seat for two-wheeled vehicles.



No. 720,524. PATENTED FEB. 10, 1903 A. JOHNSTON. ADJUSTABLE SEAT FOR TWO-WHEELED VEHICLES.

APPLICATION FILED NOV.12, 1902.

N0 MODEL.

awn/Mow anew UNITED STATES PATENT OFFICE.

ABNER JOHNSTON, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO CLARENCE L. COLLINS, OF YORK, N. Y.

ADJUSTABLE SEAT FOR TWO- WHE ELE'D VEHICLES.

SPECIFICATION formingpart of Letters Patent N o.-. 7 2O,524, dated February 10, 1903.

Application filed November 12, 1902- Serial No. 131,016. (No model.)

that the following is a full, clear, and exactv description of the same, reference being had to the annexed drawings, making a part of.

this specification, and to the letters of reference marked thereon.

The present invention has reference to that class of seats for two-wheeled vehicles-such as hansoms, buggies, and other two-wheeled vehiclesin which the drivers seat is rendered adjustable, so as to equalize the weight thereon and balance the vehicle in accordance with the load carried thereby.

The invention has for its object to provide a simple, easily-operated, and practical device or means for adjusting the vehicle-seat and holding it in its adjusted position and is designed as an improvement upon my former patent, dated October 7, 1902, No. 710,582. I

The invention consists in providing a rackbar and toothed segment for adjusting the seat and meansfor holding the seat in its adjusted position and means for guiding the seat in its movement, substantially as shown in the drawings and hereinafter described and claimed.

Figure 1 of the drawings is a-perspective View of a drivers seat for two-wheeled vehicles embodying my invention; Fig. 2, a detail sectional elevation thereof; Fig. ,3, a transverse section taken on line 3 3 of Fig. 2. In the accompanying drawings, A represents' the drivers seat of a hansom or other two-wheeled vehicle adapted to slide upon a suitable shell or standard B, which forms the support for the seat, and 0 represents the footboard, extending from the shell or standard, all of which may be of any suitable construction found most preferable in accordance with the style or class of vehicle to which the adjustable seat is connected.

The seat A has a downwardly-extending flange at around its four sides, the sides of the depending flange forming guides to the seat when being adjusted and the front and back of said flange forming stops to limit the forward and backward movement of the seat and to control its extent of adjustment. The seat A has a strengthening-plate b secured to its under side to brace and reinforce the seat and increase its strength and durability. This plate I) is provided with rack-bars c, which engage toothed segments (1, keyed or otherwise rigidly secured to a transverse shaft e,which hasits hearings in the sides of the shell or standard supporting the seat. The rotation of the shaft '6 in its bearings and the toothed segments d thereon engaging the'rack-bars c'will cause the seat to move back or forth, as required, to adjust the position thereof as required by the load carried by the vehicle. A spring-actuated latch is provided, so as to lock the seat in its adjusted position, and preferably consists of a toothed bracket f, secured to the side of the shell or standard, with which engages a spring-actuated pawl g, which is pivoted to a hand operating-lever h, secured to the projecting end of the transverse shaft c. This lever by its movement back or forth will cause the shaft to which itis connected to move upon its bearings, and through the toothed segments engaging with the rackbars the seat Will be moved forward or backward, as required, to adjust the position of seat to balance the weight of load carried by the vehicle.

Any well-known or suitable spring-actuated latch may be substituted that will hold the shaft against rotating after the seat has been adjusted, and thereby hold the seat securely in its adjusted position.

Upon the under side of the seat is secured the guide.- bar 1', which guide -bar extends through a groove in the upper edge of the shell or standard, as shown at j, and is secured at its front end by means of a screw It and nut l, as shown in Fig. 2 of the drawings. I do not desire to be understood as limiting my invention to the precise construction herein shown and described, as many changes or modifications in the various details of construction may be resorted to without in any manner affecting the essential features of the invention or departing from the principle thereof.

Having now fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

1. In a slidable and adjustable drivers seat for vehicles, a guide-bar upon the underside of the seat extending in a direction with the sliding movement thereof, means for adjusting the seat and holding itin its adjusted position, comprising rack-bars, a rotatable shaft with toothed segments thereon to engage the rack-bars, a suitable toothed bracket upon the shell or support to the seat, an operatinglever connecting with the rotatable shaft, and a spring-actuated latch upon the lever and adapted to engage the toothed bracket to hold the seat in its adjusted position, substantially as and for the purpose set forth.

2. In a slidable and adjustable drivers seat for vehicles, a seat having rack-bars upon its under side, and a downwardly extending flange to act as stops to limit the forward-andbackward movement of the seat, a rotatable shaft extending out through the side of the seat support, toothed segments upon the shaft to engage the rack bars, a toothed bracket upon the outer side of the seat-support, and a spring-actuated latch connecting with the shaft to engage the bracket to hold the seat in its adjusted position, substantially as and for the purpose specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

ABNER JOHNSTON.

WVitnesses:

JOHN D. MOEWEN, H. BRUNNQUELL. 

